The synthesis of the title compound labelled with carbon-14 in the polymeric chain is reported. MAG-Taxol, laboratory code PNU-166945, is a synthetic hydroxypropyl-methacrylamide copolymer bearing an aminoacidic side chain linked through an esteric bound at the 2’ position of the taxol C13 side chain. A three step sequence, starting from the commercially available [14C]methacrylic acid, led to the radiochemically pure final compound with a specific activity of 281 KBq/mg. The overall radiochemical yield was 20%.